This is the cross slide feed screw and two homemade setscrew collars.

这是两岸幻灯片feedscrew和两个自制固定螺丝的衣领。

youdao

This is the cross slide feed screw and two homemade setscrew collars.

这是两岸幻灯片feedscrew和两个自制固定螺丝的衣领。

youdao